Yep -- as long as you can manage them -- take as many as you want...
I hook mine together and have wheeled four carryons by myself. I have to disconnect them to go thru the machines and then re-connect them... but it works fine!!! (These carryons are suitcases that can fit in the airplanes over heads... you probably know the size...)
Upcoming cruises: Dec '18 Carnival Valor to Mexico Feb '19 Carnival Vista, Panama Canal
April '19 Cunard Queen Mary Two Southampton to NYC
Jan '20 Carnival to Eastern Caribbean
when we fly we are allowed 1 carry-on and one personal item ie...
I dont know how you can take more than one, but it would make my trip a heck of alot easier
if flying check with the airline- you can do that on-line
and get back to me cause I would like to know if I can take more than one